3M 7100138292 Radial Bristle Brush Disc 6 in 36 Grit Refill

Product Description

The 3M 7100138292 is a radial bristle brush replacement disc designed for surface preparation, cleaning, and light finishing work. Each disc mounts to a compatible benchmotor or rotary tool setup and delivers consistent, controlled abrasive action across the work surface. At 6 inches in diameter with a 36-grit construction, it removes coatings, scale, and oxidation while producing less aggression than conventional wire brushes. The bristle design flexes into contours and irregular surfaces, reducing the need for heavy tool pressure during operation. This refill pack is suited for metal fabrication shops, maintenance technicians, and industrial service professionals.

These replacement discs are used in surface conditioning applications across ferrous and non-ferrous metals, welds, castings, and fabricated assemblies. They function as a direct substitute for wire brush wheels where wire contamination or surface damage is a concern. Typical use cases include weld prep, rust and scale removal, paint stripping, and general surface cleaning in both shop and field environments. The refill format allows technicians to restock consumables without replacing the full tool assembly.

Key Features

• 6-inch diameter provides broad surface coverage per pass
• 36-grit bristle construction for aggressive coating and oxidation removal
• Flexible bristles conform to irregular and contoured surfaces
• Safe alternative to wire brushes — eliminates wire fragment contamination risk
• Effective with minimal applied pressure, reducing operator fatigue
• Refill pack format for cost-efficient consumable restocking

Compatibility

Designed as an OEM-style replacement disc for radial bristle brush systems used on benchmotors and compatible rotary finishing tools.

Installation Notes

Installation should be performed by a qualified technician familiar with rotary abrasive tooling. Power down and disconnect the benchmotor or rotary tool completely before mounting or replacing discs. Ensure the spindle speed rating of the tool does not exceed the disc rating before operation. Follow applicable ANSI and shop safety standards for abrasive wheel mounting and use.

Technical Specifications

• Diameter: 6 inches
• Grit: 36
• Weight: 1.85 pounds
• Unit of Measure: Pack
• Minimum Order Quantity: 2
• UPC: 30048011276213

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100138292